Exam 12: Rl Circuits

$\text { Figure } 12 < 1$ -If the frequency increases in Figure 12-1, the phase angle ________ and the impedance ________.

In an RL filter circuit, the cutoff frequency is defined as the frequency at Which:

$\text { Figure } 12 < 1$ -What is the cut off frequency in Figure 12-1?

$\text { Figure } 12 < 3$ -The circuit in Figure 12-3 is known as a ________ filter.

$\text { Figure } 12 < 2$ -If the resistor decreases in Figure 12-2, the total current ________.

$\text { Figure } 12 < 2$ -If the resistance increases in Figure 12-2, the total current ________.

If a high-pass RL filterʹs cutoff frequency is 55 kHz, its bandwidth is theoretically ________.

The source voltage always leads the total current in an RL circuit.

$\text { Figure } 12 < 1$ -If the frequency increases in Figure 12-1, inductance ________.

Power dissipated by the resistor in a parallel RL circuit can be increased With the addition of a capacitor in parallel.

If a low-pass RL filterʹs cutoff frequency is 20 kHz, its bandwidth is ________.

$\text { Figure } 12 < 2$ -What is the total impedance in Figure 12-2?

The impedance of a series RL circuit is found by adding the values of X_L and R using a phasor diagram.

If a load is purely inductive and the reactive power is 10 V_AR, the apparent power is ________.

In a series RL circuit, as the phase angle between the applied voltage and the total current increases, this is the same as:

If the true power is 10W and the reactive power is 10 V_AR, the apparent power is ________.

$\text { Figure } 12 < 1$ -If the operating frequency decreases in Figure 12-1, the current ________.

An ohmmeter can be used to accurately test the impedance of an RL circuit.

$\text { Figure } 12 < 2$ -What change Would increase the power factor in Figure 12-2?

The overall phase angle of a parallel circuit with a resistance of 20 $\Omega$ and an inductive reactance of 25 $\mathrm { k } \Omega$ would be nearly 90 degrees.